The hottest solar photovoltaic power generation 20

  • Detail

On March 5, Premier Wen Jiabao stressed in his government work report, "in 2012, the country will promote energy conservation and emission reduction, optimize the energy structure, increase the proportion of new and renewable energy, and strengthen the construction of energy channels." Huang Ming, a deputy to the National People's Congress and chairman of Huangming solar group, was very happy with these contents, because his proposal was about solar energy: "we should speed up the extension of solar thermal power generation from cutting-edge technology to integrated demonstration, and strengthen research support for the combination of solar thermal industry and architecture." On February 24, 10 days before the fifth session of the Eleventh National People's Congress, the Ministry of industry and information technology issued the 12th Five Year Plan for the development of solar photovoltaic industry to promote the sustainable development of solar energy industry

from national leaders and local government officials to enterprises and ordinary people, people are all concerned about the future development of solar photovoltaic, which makes Huang Ming, who has been engaged in solar energy for many years, more happy and sees the future development direction of solar photovoltaic

demonstration driven promotion

China has a vast territory and rich solar energy resources. It is estimated that the solar radiation received by the land surface of our country is as high as 50% every year × 1018kJ。 This is equivalent to 3804 times of the country's total power generation of 3650.6 billion kwh in 2009

Huang Ming pointed out that the regions accounting for about 2/3 of China's total land area are located in areas with rich or relatively rich solar energy resources, which have high solar energy development and utilization value. Especially in some western provinces, the annual solar photovoltaic power generation reserves are more than trillion kwh

in the next 10 years, if China's total annual power demand continues to grow at the current average rate of about 10%, it is estimated that by 2020, the annual power generation will reach 10 trillion kwh. With such a huge demand, solar power generation will gradually intervene

in fact, many local governments have begun to implement solar photovoltaic power generation demonstration projects

on March 1, the largest photovoltaic rooftop power generation project in Beijing, BOE's Beijing 8.5 generation plant photovoltaic power generation project, was completed, which is also Beijing's largest national "golden sun" demonstration project

according to the relevant person in charge of BOE Group Beijing BOE Energy Technology Co., Ltd., the project has a total of 21276 battery panels, which are laid on the roof of 110000 square meters of the plant, with a total installed capacity of 5000 kW. After being put into operation, the average annual power generation can reach 6million kwh. In the 25 year design life cycle, it can provide 150million kwh of clean electricity, save 60000 tons of coal, and save 120million yuan of electricity charges

in addition, in the first half of this year, Beijing will also start the construction of Badaling solar 31 MW ground large-scale photovoltaic power generation project, Changping 12.8 MW mine repair and treatment solar photovoltaic power generation project, Miyun 20 MW ground photovoltaic power station project and other projects

data show that as of 2010, China's cumulative photovoltaic installed capacity has reached 800 MW (conversion relationship: 1 MW =1000 kW)

in solar power generation, the cost target of photovoltaic power generation is undoubtedly the most concerned by the market. The goal of the 12th Five Year Plan for the development of solar photovoltaic industry is to reduce the cost of photovoltaic power generation to 0.8 yuan/kWh by 2015; By 2020, the cost of photovoltaic power generation will be reduced to 0.6 yuan/kWh

the 12th Five Year Plan for the development of solar photovoltaic industry also proposes that, "Actively promote the formulation and implementation of the electricity price policy, support the establishment of a number of distributed photovoltaic power stations, off application systems, photovoltaic building integration (BIPV) systems. The above is a coherent introduction to the use standards and experimental process of electronic universal experimental machines. Small photovoltaic systems and photovoltaic based multi-functional complementary systems, and encourage the construction and application of large photovoltaic power stations." However, in the short term, the long-term benefits of the policy can hardly hide the performance pressure faced by the industry. The report of Haitong Securities shows that as of January 31, it has become a common phenomenon for solar energy companies that announced the performance express to reduce their performance expectations, showing the strong cyclical characteristics of the industry

accelerate the application of photothermal power generation

at present, there are still some bottlenecks in the photovoltaic industry that need to be broken through. At the same time, what photovoltaic power generation needs is equipment and materials with high technological content and high added value, such as polysilicon raw materials. In the production process of polysilicon, chlorine, trichlorosilane, hydrogen chloride and other harmful gases will be produced. Therefore, solar thermal power generation has begun to receive attention, and solar thermal power generation at home and abroad is quietly rising

it is understood that solar thermal power generation started in the 1970s, but has been established around the world as an experimental power station. From 1985 to 1991, Luz company, jointly established by the United States and Israel, built nine solar thermal power plants in the California desert, and successfully realized commercial operation. Nowadays, the components such as speed change mechanism of solar photovoltaic thermal power stations are distributed in the United States, Spain, Germany, France, the United Arab Emirates, India, Egypt, Morocco, Algeria, Australia and other countries. In 2009, the installed capacity of optical thermal power stations that have been put into operation in the world was about 600 MW

Huang Ming pointed out that the cost of solar thermal power generation is low, only 20% - 30% of the cost of photovoltaic power generation is increasingly valued by countries around the world. Taking the solar high-temperature power generation with China's patented product heat collecting steel pipe as the main component as an example, according to rough calculation, the power generation cost is only 12 cents/megawatt, which is far lower than other power generation methods. The target of 5 cents/megawatt of solar thermal power generation cost in the future is just around the corner, that is, the cost of 1 kwh is within 0.4 yuan. In the world, only China has the technology and the only enterprise that can produce solar high-temperature power collection steel pipes, which will take the initiative in the development of power generation industry in the future

"solar thermal power generation avoids the use of polysilicon, and the required materials are environmentally friendly, which not only avoids the emission of harmful gases, but also saves the power generation cost from the fluctuation of polysilicon international market price, and also saves the market capacity of plastic extruder in the smelting process of polysilicon, which will further expand the consumption of electric energy." Huang Ming added

therefore, Huang Ming proposed that "solar thermal medium and high temperature utilization and solar thermal power generation" be adjusted from being classified as "cutting-edge technology research projects" to "application development and integration projects"; The corresponding state allocated funds for projects shall not exceed 20million yuan/item from "frontier technology research" in principle, and shall not exceed 100million yuan/item for "application development and integration" projects in principle

Huang Ming believes that relevant national departments should support enterprises that control the cutting-edge technology of solar energy, light and heat to build a number of model projects combining solar energy, light and heat with buildings in some major cities in China. "At the same time, detailed rules for the implementation of electricity price subsidies for renewable energy power generation, including solar thermal power generation, should be formulated as soon as possible to promote the development of solar power generation industry."

Copyright © 2011 JIN SHI